Federal direct subsidized loans are based on financial need. The federal government pays the interest during in-school, grace and deferment periods. Federal direct unsubsidized loans are not based on financial need, and the federal government does not pay the interest for these loans. Students may choose to defer interest payments until repayment begins; however, the student is responsible for all interest that accrues.
1 Outdoor air pollution can cause ongoing throat irritation. Indoor pollution â tobacco smoke or chemicals â also can cause a chronic sore throat. Chewing tobacco, drinking alcohol and eating spicy foods also can irritate your throat.  Muscle strain.
Chewing tobacco and snuff can turn your teeth yellowish-brown and give you bad breath. They can also make your gums bleed and create sores on your gums and inside your mouth that refuse to heal. The most serious health risk associated with smokeless tobacco is cancer. Smokeless tobacco products contain at least 28 cancer-causing chemicals.